feature: Product advantages: breathable and sweat-wicking suitable for sports moderate softness easy assembly no need to disassemble and assemble tools! Perfect fit! Product material: nylon Product weight: about 15g Product model: 1 / 2 / 3 / 4 / 5 / 6 / SE / 7 generation universal Strap size: 41mm / 45mm 38mm / 40mm 42mm / 44mm (45mm=44mm=42mm 41mm=40mm=38mm) 45mm 44mm 42mm :fit for 145-220mm 41mm 40mm 38mm :fit for 133-290mm Product packaging: 1*nylon loop NOTE: This is only for band sale but NOT include the watch. Three sizes of 42mm 44mm 45mm are universal 38mm 40mm 41mm is also universal. Due to the light and screen setting difference the item s color may be slightly different from the pictures.thank you for understanding. 1. The package contains: only one strap not including the watch. 2. Our shop sells high-quality 3c accessories. 3. If you want to find other straps and watch cases please visit our shop.